Wagon-jack.



B. SCHRADER.

' h WAGON JACK. AIPLIOATION FILED JAN. 30,1913.

- Patented Nov. 25, 1913.

BYRON SCHRADER, 0F WHITE EARTH, NORTH DAKOTA.

WAGON-JACK.

Specification of Letters Patent.

Patented Nov. 25,1913.

Application led January 30, 1913. Serial No. 745,272.

To all whom it may concern Be it known that I, BYRON SCHRADEE, a citizenof the United States, residing at White Earth, in the county ofMountrail, State of North Dakota, have invented certain new and usefulImprovements in VVagon-Jacks; and I do hereby declare the following tobe a full, clear, and exact description of the invention, such as willenable others skilled in the art to which it appertains to make and usethe same.

This invention relates to wagon jacks and has for an object to providean extremely simple and durable device of this character that willeconomize time in unloading grain from wagons or sleighs.

A further object is to produce a device which will effectively raise theforward ends of heavy grain carrying vehicles with minimum manualexertion.

A still further object is to produce a device of this characterthat-mayv be constructed of a minimum number of parts which will noteasily get out of order.

With the above objects in view the invention consistsl o-f certain noveldetails of construction and combination of parts hereinafter fullydescribed and claimed, it being understood that various modificationsmay be made in the minor details of construction within the scope of theappended claim.

In the accompanying drawing illustrating this invention z-Figure 1 is afront elevation. Fig. 2 is a side elevation. Fig. 3 is a reverse sideelevation. Fig. 4 is a vertical sectional view. Fig. 5 is a crosssectional view on line 5-5 Fig. 1. Fig. 6 is a detail perspective viewof one of the roller bearings.

Referring now to the 'drawing in which like characters of referencedesignate similar parts, the device is shown to consist of spacedstandards 10 and 11 which are inclined toward each other and eachconsist of uprights 12 that converge toward their upper ends and havetheir lower ends connected by a ground sill 13. A cross bar,14 isterminally interposed between the upright-s of each standard, andconnects the upper ends of the standards. The cross bar is braced byinclined braces 15 which are connected to the cross bar and to theuprights of the standards. The uprights of the standard 10 are suitablybraced by cross and diagonal braces 16 and 17, while the uprights of thestandard 11 are suitably braced by crossed diagonal braces 18 and 19.

A roller V20 is provided with an axial shaft 21 which is terminallyjournaled in bearings 22 carried by the cross bar 14, each bearing beingof the general shape shown in Fig. 6 and including a metal yoke 23 thelegs of which are arranged astride of and are bolted to the cross bar'by`bolts 24, the yoke carrying a journal box 25 for the reception of theshaft, and being equipped below the journal box with an eye 26.

A pair of blocks and tackles 27 and 28 are supported by the bearings 22,the upper block 29 of each tackle being hooked into the eye 26 of'thecorresponding bearing. The lower blocks 30 o-f the tackles are connectedby a chain 31. The end 32 of the cable of each block and tackle issecured to the central portion of the roller 20.

For actuating the roller a stub shaft 33 is journaledin cross braces 34carried by the uprights of the standard 11 and is equipped with a handwheel 35. A chain drive 36 connects the stub shaft with the shaft 21 ofthe roller.

In operation the wagon or sled to be unloaded is advanced underneath thecross bar 14 and the chain 31 engaged underneath the box. The hand wheelis now rotated with a resultant winding of the block and tackle cablesupon the roller and resultant raising of the lower blocks 30 whereby thefront end of the box is raised bodily.

What is claimed, is

A wagon jack including spaced standards, a cross bar connecting saidstandards at the tops, spaced bearings depending from said cross barnear the ends thereof, a roller terminally journaled in said bearings, ablock and tackle carried by each bearing, the end of each tackle cablebeing` secured to said roller near the center thereof whereby lateralswaying of the load is prevented, a chain connecting the lower blocks ofboth tackles and adapted to be engaged underneath a wagon, and means foractuating said roller whereby to wind said cables thereupon to lift oneend of the wagon.

In testimony whereof, I affix my signature, in the presence of twowitnesses.

BYRON SCHRADER. lVitnesses G. O. HANGAN, J. S. ANDERSON.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents, Washington, D. C.

